I am trying to install Ubuntu onto an old computer. Computer itself is a 1.7GHz processor with 608Mb RAM, standard on-board VGA graphics (ie no additonal graphics card) and a clean (ie no Windows) 160Gb HDD.
I have tried with both USB stick and DVD, all with the same symptoms.
When booting from the DVD or USB, I am presented with the usual options screen. I have selected both "Try before Installing" and "Install" options. The screen goes blank, then shortly after I have a plain dark purple screen with "Ubuntu 14.04" and then four dots which alternate between white and red - I take these to be a progress indicator.
After that, the background colour goes black, and the dots alternate between white and orange.
Shortly after that, the screen goes black, and then the monitor displays its "Out Of Range" warning. I can press CTRL-ALT-F1, and get the command line, however then pressing CTRL-ALT-F7 does not bring up any sort of GUI. CTRL-ALT-F2...F6 bring various "command line" results.
I have tried the NOMODESET option, as well as two other options from the F6 boot menu options which I found mentioned (sorry, cannot remember what they were).
I appreciate that it's an old computer, but as far as I can see, it's within the specifications for Ubuntu - it used to run XP in its former life.
What am I doing wrong?